WO2015062310A1 - 一种液晶显示面板、显示装置及其驱动方法 - Google Patents
一种液晶显示面板、显示装置及其驱动方法 Download PDFInfo
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- WO2015062310A1 WO2015062310A1 PCT/CN2014/082424 CN2014082424W WO2015062310A1 WO 2015062310 A1 WO2015062310 A1 WO 2015062310A1 CN 2014082424 W CN2014082424 W CN 2014082424W WO 2015062310 A1 WO2015062310 A1 WO 2015062310A1
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- liquid crystal
- pixel electrode
- electrode
- display panel
- crystal display
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 71
- 239000010409 thin film Substances 0.000 claims description 19
- 239000011347 resin Substances 0.000 claims description 11
- 229920005989 resin Polymers 0.000 claims description 11
- 230000005684 electric field Effects 0.000 description 45
- 230000010287 polarization Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 3
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134363—Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
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- G02F1/13439—Electrodes characterised by their electrical, optical, physical properties; materials therefor; method of making
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/13624—Active matrix addressed cells having more than one switching element per pixel
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- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134318—Electrodes characterised by their geometrical arrangement having a patterned common electrode
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134381—Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates
Definitions
- Liquid crystal display panel Liquid crystal display panel, display device and driving method thereof
- the present invention relates to the field of display technologies, and in particular, to a liquid crystal display panel, a display device, and a method for moving the same. Background technique
- TFT-LCD Thin Film Transistor Liquid Crystal Display
- the liquid crystal display can be divided into: Twisted Nematic (TN) type, In Plane Switching (IPS) type and Advanced Super Dimension Switch (ADSDS, also called ADS). )type.
- TN Twisted Nematic
- IPS In Plane Switching
- ADSDS Advanced Super Dimension Switch
- the ADS mode liquid crystal display forms a multi-dimensional electric field by an electric field generated by the edge of the slit electrode in the same plane in the liquid crystal display and an electric field generated between the slit electrode layer and the planar electrode layer, and the electric field is a horizontal electric field.
- the horizontal electric field enables rotation of all the aligned liquid crystal molecules between the slit electrodes in the liquid crystal cell and directly above the electrode, thereby improving the liquid crystal working efficiency and increasing the light transmission efficiency.
- Advanced super-dimensional field switching technology can improve the picture quality of TFT-LCD, with high resolution, high transmittance, low power consumption, wide viewing angle, high aperture ratio, low chromatic aberration, and no push mura.
- ADS technology has improved high-transmission I-ADS technology, high aperture ratio H-ADS technology and high-resolution S-ADS technology.
- the ADS mode liquid crystal display specifically forms a multi-dimensional electric field by an electric field generated between a common electrode and a pixel electrode on the array substrate.
- the horizontal electric field in the multi-dimensional electric field enables rotation of all aligned liquid crystal molecules between the slit electrodes in the liquid crystal cell and directly above the electrodes.
- Embodiments of the present invention provide a liquid crystal display panel, a display device, and a driving method thereof, for providing a liquid crystal display panel and a display device with better picture quality.
- a liquid crystal display panel provided by an embodiment of the present invention includes: a first substrate and a second substrate disposed opposite to each other; and a liquid crystal layer between the first substrate and the second substrate.
- the liquid crystal display panel further includes a first common electrode on a side of the first substrate adjacent to the liquid crystal layer and a second common electrode on a side of the second substrate adjacent to the liquid crystal layer.
- a first pixel electrode and a second pixel electrode are further disposed on the first substrate.
- the second common electrode does not face the first pixel electrode and/or the second pixel electrode.
- the liquid crystal layer is a positive liquid crystal layer composed of positive liquid crystal molecules.
- the initial orientation of the liquid crystal molecules in the liquid crystal layer is perpendicular to the first substrate or the second substrate.
- the first pixel electrode includes one or more first sub-electrodes
- the second pixel electrode includes one or more second sub-electrodes. Each of the first sub-electrodes is spaced apart from each of the second sub-electrodes.
- the first pixel electrode and the second pixel electrode are located on a side of the first common electrode adjacent to the liquid crystal layer and insulated from the first common electrode by an insulating layer.
- the first pixel electrode and the second pixel electrode are disposed in the same layer.
- the first common electrode is a planar electrode.
- the first sub-electrode and or the second sub-electrode are strip electrodes.
- the liquid crystal display panel further includes: a dielectric layer on a side of the first common electrode adjacent to the liquid crystal layer.
- the liquid crystal display panel further includes a first thin film transistor connected to the first pixel electrode and a second thin film transistor connected to the second pixel electrode.
- Embodiments of the present invention provide a display device including the liquid crystal display panel of any of the above modes.
- An embodiment of the present invention provides a driving method for driving the display device, including: applying a first voltage and a second voltage to the first pixel electrode and the second pixel electrode, respectively, and applying the first common electrode and the second common electrode respectively The third voltage and the fourth voltage.
- the first voltage, the second voltage, and the third voltage are unequal to each other, and the first voltage and the second voltage and the fourth voltage are not equal to each other.
- the third voltage and the fourth voltage are equal.
- the first substrate is provided with a first pixel electrode and a second pixel electrode
- the first substrate is provided with a first common electrode
- the second substrate is provided with a second common An electrode
- the second common electrode has no perpendicular intersection with the first pixel electrode and/or the second pixel electrode
- an electric field is formed between the first pixel electrode and the second pixel electrode
- a common electrode forms an electric field.
- an electric field is formed between the first pixel electrode and the second pixel electrode and the second common electrode, respectively.
- the first pixel electrode and the second pixel electrode respectively
- the electric field formed between the second common electrodes has no vertical electric field, and the degree of deflection of the liquid crystal molecules of the liquid crystal layer relative to the initial alignment direction is enhanced, the driving voltage of the liquid crystal display is lowered, and the image display quality is improved.
- FIG. 1 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the present invention.
- FIG. 2 is a schematic structural diagram of an electric field formed in a liquid crystal display panel according to an embodiment of the present invention
- FIG. 3 is a schematic structural diagram of a first pixel electrode and a second pixel electrode according to an embodiment of the present invention
- FIG. 5 is a schematic structural diagram of a liquid crystal display panel according to another embodiment of the present invention.
- FIG. 6 is a top plan view showing a partial structure of an array substrate according to an embodiment of the present invention. detailed description
- Embodiments of the present invention provide a liquid crystal display panel, a display device, and a driving method thereof for reducing a driving voltage of a liquid crystal display and improving image display quality.
- Embodiments of the present invention provide a novel liquid crystal display panel.
- a first pixel electrode, a second pixel electrode, and a first common electrode are disposed on the first substrate.
- a second common electrode having no opposite surface to the first pixel electrode and/or the second pixel electrode is disposed on the second substrate opposite to the first substrate. This can increase the degree of deflection of the liquid crystal molecules of the liquid crystal layer with respect to the initial alignment direction, lower the driving voltage of the liquid crystal display, and improve the image display quality.
- FIG. 1 is a schematic cross-sectional view of a liquid crystal display panel according to an embodiment of the present invention.
- the liquid crystal display panel includes a first substrate 11 and a second substrate 21 disposed opposite to each other and a liquid crystal layer 3 between the first substrate 11 and the second substrate 21.
- a pixel array is disposed on the first substrate 11 (the pixel array is not shown in FIG. 1).
- a first common electrode 12 is disposed on a side of the first substrate 11 adjacent to the liquid crystal layer 3.
- a second common electrode 22 is disposed on a side of the second substrate 21 adjacent to the liquid crystal layer 3.
- the first substrate 11 is provided with a first pixel electrode 1 and a second pixel electrode 2 (in particular, the first pixel electrode 1 and the second pixel electrode 2 may be disposed in each of the sub-pixel regions in the pixel array).
- the liquid crystal layer is a positive liquid crystal layer composed of positive liquid crystal molecules.
- Fig. 1 is a view showing the distribution of liquid crystal molecules when no voltage is applied to the first common electrode 12, the second common electrode 22, the first pixel electrode 1 and the second pixel electrode 2 of the liquid crystal display panel.
- the initial orientation of the liquid crystal molecules 3 is perpendicular to the first substrate 11 or the second substrate 21.
- FIG. 2 is a schematic view showing the orientation distribution of liquid crystal molecules when a voltage is applied to the first common electrode 12, the second common electrode 22, the first pixel electrode 1 and the second pixel electrode 2 of the liquid crystal display panel, respectively.
- the line segment with an arrow in Figure 2 represents the electric field line.
- the first common electrode 12 generates a horizontal electric field with the first pixel electrode 1 and the second pixel electrode 2, respectively.
- a horizontal electric field is generated between the first pixel electrode 1 and the second pixel electrode 2.
- An oblique electric field is generated between the first pixel electrode 1 and the second pixel electrode 2 and the second common electrode 22, respectively.
- the liquid crystal molecules are arranged at an angle from the initial alignment direction (the direction perpendicular to the first substrate), i.e., tend to be aligned in a direction parallel to the first substrate 11.
- the second common electrode 22 and the first pixel electrode 1 and/or the second pixel electrode 2 have no front-facing overlapping faces, the second common electrode 22 and the first pixel electrode 1 and/or the first comparative electrode are compared with the prior art.
- the vertical electric field between the two pixel electrodes 2 is less or absent, and thus the liquid crystal molecules are more angularly offset from the initial alignment direction when no voltage is applied.
- the driving voltage is constant, the transmittance of the liquid crystal display panel is larger, and the driving voltage of the liquid crystal display panel is lower under the premise that the light transmittance is constant. Accordingly, the image display quality is higher.
- the first pixel electrode and the second pixel electrode are disposed in the same layer.
- the first pixel electrode and the second pixel electrode are located on a side of the first common electrode adjacent to the liquid crystal layer and insulated from the first common electrode by an insulating layer.
- the first common electrode is a planar electrode.
- the first pixel electrode and the second pixel electrode provided by the above-described invention, and the first common electrode and the second common electrode will be specifically described below.
- Fig. 3 is a top plan view of the liquid crystal display panel shown in Fig. 1, in which only the first pixel electrode 1 and the second pixel electrode 2 are shown.
- the first pixel electrode 1 includes one or more first sub-electrodes 111; and the second pixel electrode 2 includes one or more second sub-electrodes 112. Each of the first sub-electrodes 111 is spaced apart from each of the second sub-electrodes 112.
- a horizontal electric field is generated between the first sub-electrode 111 and the second sub-electrode 112, and the distribution of the corresponding liquid crystal molecules is multi-domain, and the liquid crystal display panel has a wider viewing angle and a better display effect.
- the shape of the first sub-electrode 111 and the second sub-electrode 112 is strip-shaped, for example, a linear "I” or a bent shape such as a bracket-like " ⁇ ” or the like.
- first sub-electrodes 111 are arranged in parallel with each other, and the second sub-electrodes 112 are arranged in parallel with each other.
- the first sub-electrode 111 and the second sub-electrode 112 of the present invention are not limited to the above embodiments, and any arrangement that satisfies the formation of the IPS mode by the two sub-electrodes is applicable to the present invention.
- FIG. 4 is a top plan view of the liquid crystal display panel shown in FIG. 1, in which only the second common electrode 22, the first pixel electrode 1 and the second pixel electrode 2 are shown.
- the second common electrode 22 includes a plurality of third sub-electrodes 222. It can be more clearly seen that the third sub-electrode 222 and the first sub-electrode 111 and the second sub-electrode 112 have no front-facing overlapping surfaces, and the projection of the two is not overlapping.
- the first pixel electrode 1 and the second pixel electrode 2 may be driven by one thin film transistor or by two or more thin film transistors to ensure that liquid crystal molecules directly above the first pixel electrode 1 and the second pixel electrode 2 can be deflected Improve the viewing angle and improve the display.
- the voltages on the first pixel electrode and the second pixel electrode are not equal, and in specific implementation, The voltage across the first pixel electrode and the second pixel electrode is controlled by the two thin film transistors TFT, respectively.
- the distance between the projection of the first sub-electrode 111 of the first pixel electrode 1 or the second sub-electrode 222 of the second pixel electrode 2 and the second common electrode 22 on the same plane is determined according to actual conditions. There are no restrictions here.
- each of the first sub-electrode 111 and each of the second sub-electrodes 222 has a width of 2.5 ⁇ m, and the distance between the first sub-electrode 111 and the second sub-electrode 222 is 4.5 ⁇ m
- the second common electrode 22 is located at the second
- the width of the electrode portion between the one sub-electrode 111 and the second sub-electrode 222 may be any size not greater than 4.5 ⁇ m. It suffices that the second common electrode 22 and each of the first sub-electrodes 111 and/or each of the second sub-electrodes 222 do not face each other.
- the second common electrode 22 and the first pixel electrode 1 and/or the second pixel electrode 2 do not have a right overlapping surface, the second common electrode 22 and the first sub-electrode 111 and/or the second sub-electrode 222 are not positive. On the overlapping faces.
- the second common electrode 22 and the first sub-electrode 111 and the second sub-electrode 222 have no opposite overlapping faces.
- the second common electrode, the first common electrode, the first pixel electrode and the second pixel electrode are transparent conductive materials, and may be, for example, indium tin oxide (ITO) or indium oxide (?).
- ITO indium tin oxide
- ? indium oxide
- the arrangement of the first common electrode and the first pixel electrode and the second pixel electrode may include various types, for example, the first common electrode is located at a different layer or the same layer as the first pixel electrode and the second pixel electrode.
- the first common electrode is located at a different layer from the first pixel electrode and the second pixel electrode.
- the first common electrode 12 on the first substrate 11 is located in a different layer from the first pixel electrode 1 and the second pixel electrode 2 and is insulated by the first insulating layer 13.
- the first common electrode 12 is located below the first pixel electrode 1 and the second pixel electrode 2.
- the first common electrode 12 is located above the first substrate 11
- the first insulating layer 13 is located above the first common electrode 12
- the first pixel electrode and the second pixel electrode (corresponding to each of the sub-pixels 14 )
- the first pixel electrode and the second pixel electrode are located above the first insulating layer 13.
- the liquid crystal display panel provided by the above embodiment is not limited to the structure described.
- the liquid crystal display panel provided by the embodiment of the present invention further includes a dielectric layer (Over Coat, OC) 24 covering the second substrate 21 on a side of the second common electrode 22 adjacent to the liquid crystal layer 3.
- a dielectric layer (Over Coat, OC) 24 covering the second substrate 21 on a side of the second common electrode 22 adjacent to the liquid crystal layer 3.
- the dielectric layer may be an organic resin layer.
- the organic resin layer functions to protect the second common electrode, and can further deflect liquid crystal molecules close to the dielectric layer, thereby improving the display effect.
- the thickness of the dielectric layer is also related to the deflection angle of the liquid crystal described above, and the specific implementation It is necessary to select a suitable thickness, which is similar to the prior art and will not be described again.
- At least a color resin layer is further provided on the second substrate. If the second common electrode 22 is located between the base substrate on the second substrate and the color resin layer, the dielectric layer may not be separately provided, but the color resin layer may be directly used as the dielectric layer.
- the liquid crystal display panel provided by the embodiment of the present invention further includes a first polarizer 15 located on a side of the first substrate 11 away from the liquid crystal layer 3, and a second polarizer 21 away from the liquid crystal layer 3. a second polarizer 25 on one side.
- the polarization directions of the first polarizer 15 and the second polarizer 25 are perpendicular or parallel to each other.
- the liquid crystal molecules can change the polarization direction of the light, that is, the liquid crystal molecules delay the phase of the light.
- the first polarizer and the second polarizer can smoothly emit light that has undergone phase delay through the liquid crystal layer to the light exit side of the liquid crystal display panel to realize image display.
- the liquid crystal display panel further includes: a first alignment layer 16 on a side of each sub-pixel 14 adjacent to the liquid crystal layer 3, a color resin layer 23 on the second substrate 21, and a dielectric layer ( Over Coat, OC ) 24 is a second alignment layer 26 on the side close to the liquid crystal layer 3.
- the second common electrode 22 is located between the color resin layer 23 and the dielectric layer (Over Coat, OC ) 24; the first alignment layer 16 and the second alignment layer 26 are used for liquid crystal molecules in the liquid crystal layer 3 when no voltage is applied.
- Orientation which is the initial orientation mentioned above. When there is no electric field distribution between the first substrate 11 and the second substrate 21, the liquid crystal molecules are aligned in the orientation direction of the first alignment layer 16 and the second alignment layer 26.
- the liquid crystal layer includes a horizontal electric field and a tilt electric field.
- the initial alignment direction of the positive liquid crystal molecules is perpendicular to the first substrate and the second substrate.
- the light does not change through the polarization direction of the liquid crystal molecules, and the light cannot be emitted to the light-emitting side of the liquid crystal display panel through the second polarizing plate, and the liquid crystal display panel displays a black screen, that is, a normally black mode.
- the first pixel electrode and the second pixel electrode respectively form a horizontal electric field with the first common electrode, form an oblique electric field with the second common electrode, and a horizontal electric field is formed between the first pixel electrode and the second pixel electrode.
- the liquid crystal molecules arranged in the initial direction are deflected in the direction of the horizontal electric field, and the long axis of the liquid crystal molecules forms a certain angle with the first substrate, and the polarization direction changes after the light passes through the liquid crystal molecules, and the polarization direction is along the second polarization.
- the light of the component of the polarization direction of the sheet can be smoothly emitted through the second polarizing plate to the light-emitting side of the liquid crystal display panel to realize image display.
- the array substrate provided by the embodiment of the present invention further includes a first thin film transistor 101 connected to the first pixel electrode 1 and a second thin film transistor 201 connected to the second pixel electrode 2.
- the drain of the first thin film transistor 101 is connected to the first pixel electrode 1
- the drain of the second thin film transistor 201 is connected to the second pixel electrode 2.
- the array substrate further includes: a first gate line 102 connected to the gate of the first thin film transistor 101, a first data line 103 connected to the source of the first thin film transistor 101, and a second thin film transistor 201 A second gate line 202 connected to the gate, and a second data line 203 connected to the source of the second thin film transistor 201.
- the first thin film transistor 101 and the second thin film transistor 201 shown in Fig. 6 are not limited to the illustrated structure. Further, the thin film transistor further includes an active layer between the source and the drain and the gate. The active layer is not shown in Fig. 6.
- first gate line 102 and the second gate line 202 are the same gate line 102 (202).
- the sub-pixel region of the array substrate provided by the present invention contains two pixel electrodes, so the two pixel electrodes require two TFTs for control, and FIG. 6 is only one of them.
- the position of the two TFTs in the sub-pixels may also include other forms, which are not listed here.
- the embodiment of the present invention further provides a display device comprising the liquid crystal display panel of any of the above embodiments provided by the above embodiments of the present invention.
- the display device may be a liquid crystal display panel, a liquid crystal display, a liquid crystal television or the like.
- the embodiment of the invention further provides a driving method for driving the display device, comprising: applying a first voltage and a second voltage to the first pixel electrode and the second pixel electrode, respectively, and applying the first common electrode and the second common electrode respectively.
- the third voltage and the fourth voltage are not equal to each other, and the first voltage and the second voltage and the fourth voltage are not equal to each other.
- the third voltage and the fourth voltage are equal.
- an equivalent voltage is applied to the first common electrode and the second common electrode.
- the first substrate is provided with a first pixel electrode and a second pixel electrode
- the first substrate is provided with a first common electrode
- the second substrate is disposed on the second substrate.
- a second common electrode is provided.
- the second common electrode has no perpendicular overlapping surface with the first pixel electrode and the second pixel electrode.
- An electric field is formed between the first pixel electrode and the second pixel electrode, and an electric field is formed between the first pixel electrode and the second pixel electrode and the first common electrode, respectively.
- an electric field is formed between the first pixel electrode and the second pixel electrode and the second common electrode, respectively.
- the electric field formed between the first pixel electrode and the second pixel electrode and the second common electrode respectively has no vertical electric field, and the horizontal electric field acting on the liquid crystal molecules is enhanced, thereby achieving the purpose of enhancing the horizontal electric field of the liquid crystal layer and reducing the driving of the liquid crystal display. Voltage, improve image display quality.
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Abstract
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CN103529607B (zh) * | 2013-10-29 | 2017-05-31 | 京东方科技集团股份有限公司 | 一种液晶显示面板、显示装置及其驱动方法 |
CN104280952B (zh) * | 2014-10-10 | 2017-08-25 | 上海中航光电子有限公司 | 一种液晶显示面板、其驱动方法及显示装置 |
CN105824157A (zh) * | 2015-01-28 | 2016-08-03 | 群创光电股份有限公司 | 液晶显示面板 |
CN104777682B (zh) | 2015-04-27 | 2017-11-03 | 深圳市华星光电技术有限公司 | 一种液晶显示面板及装置 |
KR102422555B1 (ko) * | 2015-05-08 | 2022-07-21 | 삼성디스플레이 주식회사 | 표시장치 |
CN105652494A (zh) * | 2016-01-20 | 2016-06-08 | 京东方科技集团股份有限公司 | 一种显示面板、显示装置及其驱动方法 |
CN106773191A (zh) * | 2016-11-21 | 2017-05-31 | 上海天马微电子有限公司 | 显示面板及其驱动电路、显示装置 |
CN106773375B (zh) * | 2017-01-12 | 2019-11-05 | 京东方科技集团股份有限公司 | 显示面板及其制备方法、显示装置 |
CN107844000B (zh) * | 2017-10-27 | 2020-10-16 | 上海中航光电子有限公司 | 一种显示装置和显示装置的驱动方法 |
CN108873501A (zh) * | 2018-07-06 | 2018-11-23 | 京东方科技集团股份有限公司 | 一种阵列基板及其制备方法、显示面板 |
TWI674463B (zh) * | 2018-07-19 | 2019-10-11 | 友達光電股份有限公司 | 顯示裝置 |
CN111308745A (zh) * | 2020-03-02 | 2020-06-19 | 重庆京东方光电科技有限公司 | 显示面板及显示装置的显示方法 |
CN112526782B (zh) * | 2020-12-07 | 2023-05-30 | 成都京东方显示科技有限公司 | 液晶显示面板及液晶显示面板制作方法 |
CN115933259A (zh) * | 2023-01-09 | 2023-04-07 | 京东方科技集团股份有限公司 | 显示面板和显示装置 |
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US9678393B2 (en) | 2017-06-13 |
CN103529607A (zh) | 2014-01-22 |
US20160018704A1 (en) | 2016-01-21 |
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